I didn't know about the Happs bezels... I very carefully cut one out of posterboard. The inner part of the bezel is four pieces of black posterboard cut to match the curve of the monitor; this is attached to foamcore board, with another layer of black posterboard over that, and instruction cards on top of that. Since my inner bezel covers the monitor plastic perfectly, I didn't have to paint the monitor.
It was a pain in the butt, though; in retrospect I wish I had used a Happs bezel.
--Chris